Question

How would I find the equation for the points
(1,31) and (3,34)?
can someone please help me?

Answer 1

First find the slope :)

Answer 2

use the magic slope formula:
\[\frac{ y_1-y_2 }{ x_1-x_2 }\]

Answer 3

substitute your points and solve

Answer 4

m=34/3-31/1 would that work?

Answer 5

\[\frac{ 31-34 }{ 1-3 }=\frac{ -3 }{ -2 }=\frac{ 3 }{ 2 }\]

Answer 6

now we have y=mx+b where m is slope and b is y-intercept:
m=3/2

subtitute one of the coordinates into the equation and solv for b:
31=3/2*1+b
b=29.5

thus the equation is y=3/2x+29.5

Answer 7

oh thank you very much!!